如何在VS项目中静态链接没有dll文件的cpprest？

Question

I finally linked Casablanca/CPPRESTSDK with VS17, thanks for this post Statically linking Casablanca/CPPREST SDK and some anothers. But now I see, that when I start project, for some reason VS automatically generates 3 DLL files zlib1.dll SSLEAY32.dll LIBEAY32.dll in folder with .exe, but I actually linked staticly for not to have them at all. I also have these files in lib format in vcpkg-master\\installed\\x86-windows-static\\lib , can I somehow use them instead of dlls?

Answer 1

I had the same problem. I have a Visual Studio solution with projects using MFC in a shared DLL and using the multi-threaded DLL runtime library. I wanted to link statically to cpprestsdk without three extra DLLs to distribute. Linking to the static version of cpprestsdk wasn't working: I couldn't link because of conflicting runtime libraries ( /MT - multithreaded and /MD - multi-threaded DLL). I couldn't find a pre-compiled version which used the /MD switch (multi-threaded DLL), but exported as a library. So I had to compile it myself.

My solution:

• download vcpkg ( https://github.com/microsoft/vcpkg ). This is a package C and C++ library package manager. You will need to 'bootstrap' it. See the Quick Start.
• install necessary dependencies for cpprestsdk: `vcpkg install --triplet x86-windows zlib openssl boost-system boost-date-time boost-regex boost-interprocess websocketpp brotli
• download cpprestsdk from github ( https://github.com/Microsoft/cpprestsdk )
• generate a Visual Studio solution file ( https://github.com/microsoft/cpprestsdk/wiki/How-to-build-for-Windows ). I wanted to generate an x86 version, so I had to use the following command cmake ../Release -A win32 -DCMAKE_TOOLCHAIN_F ILE=d:\\jw\\git\\vcpkg\\scripts\\buildsystems\\vcpkg.cmake .
• open cpprestsdk.sln solution and do the following for Release and Debug configurations in the cpprest project:
  • change the configuration type to Static library
  • change the target file extension to .lib .
  • build debug and release versions.

I could then use the generated libraries in my solution.

• add the cpprestsdk include directory to my project
• add the cpprestsdk libraries to the linker Input
• add the zlib and openssl libraries from the cpprestsdk packages directory.
• add the libraries bcrypt.lib , winhttp.lib and crypt32.lib to the linker Input too ( Statically linking Casablanca/CPPREST SDK )
• you also need to add the preprocessor flag _NO_ASYNCRTIMP to the project where you use cpprestsdk.

I hope this helps someone save some of the hours I lost getting it to work!